Bhiwandi

LM-79 Testing for LED Lights

LM-79 is an approved method for taking electrical and photometric measurements of SSL products. It covers total flux (light output), electrical power, efficacy, chromaticity, and intensity distribution. The five required metrics on the LED Lighting Facts label come from LM-79 testing results.

ITCIndia Laboratory has been awarded accreditation by the NABL under the Energy Efficient Lighting Products Program. This includes LM-79 accreditation for Solid State Lighting Luminaires – Total Flux Measurements (Luminous Efficacy) and Solid State Lighting Luminaires –Luminous Intensity Measurements.

Our accreditation also includes IES LM-80:2008 for Solid State Lighting Luminaires-Lumen Maintenance (SSL Life Tests).

ITCIndia laboratory is also on the LED Lighting Facts Approved Labs List.

ITCIndia can do safety testing against below international standard like

IEC 61010-1 : lab instruments

IEC 60204-1 : COntrol panel

IEC 60595 : LED luminary

IEC 61347 : Lamp control gear

IEC 60950 : Information technology equipments

IEC 60601 : Electromedical equipmets

IEC 60065 : Audio video & similar product

IEC 61439 : Low voltage switchgear & control gear assemblies

IEC 60034 : rotating electrical machine and more contact us for more information…

The scope of LM-79 applies to LED products that incorporate control electronics and heat sinks. This covers complete LED luminaires and integrated LED sources. It does not include bare LED chips or LED based products without a light source.

LM-79 testing requires complete luminaire testing on an absolute photometric basis. Typically lighting products are evaluated on a relative photometric basis, where separate tests are done for lamps an luminaires. However, for solid state lighting products the LED lamps typically cannot be separated from their luminaires. The absolute photometric testing required measures the light distribution and light intensity of the complete luminaire.

LM-79 Procedures and Conditions

Ambient Conditions

Maintain temperature at 25 degrees C +/-1 degree C (within 1M)

Mounting – limit thermal transfer

Limited air flow

Power Supply

AC waveshape limit to harmonic RMS of 3%

Voltage regulation to +/- 2%

Seasoning and Stabilization

Testing Orientation

Electrical Settings

Instrumentation

LM-79 Testing Methods

Integrating sphere systems are used to measure the total luminous flux and color for LM-79. This can be performed with a photometer (total luminous flux) or a spectral radiometer (spectral radiant flux). Utilizing a spectral radiometer and integrating sphere is the preferred method, which derives total luminous flux and color qualities form spectral radiant flux measurements.

Goniophotometer systems are also used for LM-79 testing to measure luminous intensity distribution. The Goniophotometer system tests derive total luminous flux and provide color characteristics including CCT and CRI.

LM-79 Test Outputs and Calculations

Total Luminous Flux

Luminous Intensity Distribution

Electrical Power

Luminous Efficacy

Chromaticity

CCT

CRI

For your better understanding, we are going to show you the LM-79 test report of latest LED in the following:

If you Require Testing of LED Batten as per LM-79. ITC India Can Help You! ITC India One of the Best LM-79 testing Laboratory in India. If you have any requirement related LED Batten Testing, you can feel free to contact us. (Call:+91-8196980555)